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Ubuntu 18.04 ESM / 20.04 LTS : Linux kernel vulnerabilities (USN-6495-1)

high Nessus Plugin ID 186082

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Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 18.04 ESM / 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-6495-1 advisory.

 - An issue was discovered in drivers/mtd/ubi/cdev.c in the Linux kernel 6.2. There is a divide-by-zero error in do_div(sz,mtd->erasesize), used indirectly by ctrl_cdev_ioctl, when mtd->erasesize is 0.
 (CVE-2023-31085)

 - An issue was discovered in drivers/net/ethernet/intel/igb/igb_main.c in the IGB driver in the Linux kernel before 6.5.3. A buffer size may not be adequate for frames larger than the MTU. (CVE-2023-45871)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected kernel package.

See Also

https://ubuntu.com/security/notices/USN-6495-1

Plugin Details

Severity: High

ID: 186082

File Name: ubuntu_USN-6495-1.nasl

Version: 1.2

Type: local

Agent: unix

Published: 11/21/2023

Updated: 1/9/2024

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

Vector: CVSS2#AV:A/AC:H/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2023-45871

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-167-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1061-ibm, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1075-bluefield, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1113-oracle, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1114-aws, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1026-iot, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-167-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1034-xilinx-zynqmp, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1103-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1098-raspi, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, cpe:/o:canonical:ubuntu_linux:18.04:-:esm, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-167-generic

Required KB Items: Host/cpu, Host/Debian/dpkg-l, Host/Ubuntu, Host/Ubuntu/release

Exploit Ease: No known exploits are available

Patch Publication Date: 11/21/2023

Vulnerability Publication Date: 4/24/2023

Reference Information

CVE: CVE-2023-31085, CVE-2023-45871

USN: 6495-1